JWT Expiry Calculator

Paste a JWT to see when it was issued, when it expires and how much time is left — without sending it anywhere.

JWT

Press “Check expiry” to see the result.

How to use jwt expiry calculator

1Enter your valuesFill in the fields — example values are already there to start from.

2Adjust the optionsChange the choices to match your situation. Results update as you type.

3Use the resultRead it, or copy it with the Copy button.

No, it only decodes the token. Verification needs the secret or public key.

Issued-at, not-before and expiry times, in seconds since 1970.

No. Everything is worked out in your browser and nothing you type is sent to a server.